History of the Department of Lighting Engineering, Moscow Power Engineering Institute site (Russian) - "Archived copy". Archived from the original on 2008-03-17. Retrieved 2008-03-29.{{cite web}}: CS1 maint: archived copy as title (link)
History of the Department of Lighting Engineering, Moscow Power Engineering Institute site (Russian) - "Archived copy". Archived from the original on 2008-03-17. Retrieved 2008-03-29.{{cite web}}: CS1 maint: archived copy as title (link)